<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>用户管理</el-breadcrumb-item>
  <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>
  <!-- 卡片视图区 -->
  <el-card>
  <!-- 搜索与添加区域 -->
  <el-row :gutter="20">
    <el-col :span="8">
      <el-input placeholder="请输入内容" v-model= "queryInfo.query" clearable @clear= 'getUsersList'>
   <el-button slot="append" icon="el-icon-search" @click= "getUsersList"></el-button>
  </el-input>
    </el-col>
      <el-col :span="4">
        <el-button type="primary" @click= "addDialogVisible=true">添加用户</el-button>
      </el-col>
  </el-row>
  <!-- 用户列表区域 -->
  <el-table :data= "userlist" border stripe>
    <el-table-column type="index"></el-table-column>
    <el-table-column label="姓名" prop="username"></el-table-column>
    <el-table-column label="邮箱" prop="email"></el-table-column>
    <el-table-column label="电话" prop="mobile"></el-table-column>
    <el-table-column label="角色" prop="role_name"></el-table-column>
    <el-table-column label="状态">
      <template slot-scope="scope">
       <el-switch v-model= "scope.row.mg_state" @change= "usersStateChanged(scope.row)">
        </el-switch>
      </template>
    </el-table-column>
    <el-table-column label="操作" width="180px">
      <template slot-scope="scope">
       <!-- 修改按钮 -->
       <el-button type="primary" icon="el-icon-edit" size="mini" @click= "showEditDialog(scope.row.id)"></el-button>
       <!-- 删除按钮 -->
       <el-button type="danger" icon="el-icon-delete" size="mini" @click= "removeUsersById(scope.row.id)"></el-button>
       <!-- 分配角色按钮 -->
        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable= 'false'>
      <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
    </el-tooltip>
      </template>
    </el-table-column>
  </el-table>
  <!-- 分页区域 -->
   <el-pagination
      @size-change= "handleSizeChange"
      @current-change= "handleCurrentChange"
      :current-page= "queryInfo.pagenum"
      :page-sizes= "[1, 2, 5, 10]"
      :page-size= "queryInfo.pagesize"
      layout= "total, sizes, prev, pager, next, jumper"
      :total= "total">
    </el-pagination>
  </el-card>
  <!-- 添加用户的对话框 -->
  <el-dialog
      title="添加用户"
      :visible.sync= "addDialogVisible"
      width="50%" @close= 'addDialogClosed'>
      <!-- 主体区域 -->
      <el-form :model= "addForm" :rules= "addFormRules" ref="addFormRef" label-width="70px">
    <el-form-item label="用户名" prop="username">
    <el-input v-model= "addForm.username"></el-input>
    </el-form-item>
    <el-form-item label="密码" prop="password">
    <el-input v-model= "addForm.password" type="password"></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
    <el-input v-model= "addForm.email"></el-input>
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
    <el-input v-model= "addForm.mobile"></el-input>
    </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
      <el-button @click= "addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click= "addUser">确 定</el-button>
  </span>
</el-dialog>
<!-- 修改用户的对话框 -->
<el-dialog
  title="修改用户"
  :visible.sync= "editDialogVisible"
  width="50%" @close= 'editDialogClosed'
 >
  <el-form :model= "editForm" :rules= "editFormRules" ref="editFormRef" label-width="70px">
  <el-form-item label="用户名">
    <el-input v-model= "editForm.username" disabled></el-input>
  </el-form-item>
  <el-form-item label="邮箱" prop= "email">
    <el-input v-model= "editForm.email"></el-input>
  </el-form-item>
  <el-form-item label="手机号" prop= "mobile">
    <el-input v-model= "editForm.mobile"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click= "editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click= "editUserInfo">确 定</el-button>
  </span>
</el-dialog>
<!-- 分配角色的对话框 -->
<el-dialog
  title="提示"
  :visible.sync="setRoleDialogVisible"
  width="50%" @close='setRoleDialogClosed'>
  <div>
    <p>当前的用户：{{userInfo.username}}</p>
    <p>当前的角色：{{userInfo.role_name}}</p>
    <p>分配新角色：
      <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select>
    </p>
  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>
<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
       }
      // 不合法的邮箱
        cb(new Error('请输入正确的邮箱！'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
            // 合法的手机号
              return cb()
      }
      // 不合法的手机号
        cb(new Error('请输入正确手机号！'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单验证规则的对象
      addFormRules: {
        username: [{ required: true, message: '请输入用户名', trigger: 'blur' }, { min: 3, max: 10, message: '用户名的长度在 3 到 5 个字符', trigger: 'blur' }],
        password: [{ required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 10, message: '密码的长度在 6 到 15 个字符', trigger: 'blur' }],
        email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
      // 控制修改用户的对话框的显示隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改用户的验证规则对象
      editFormRules: {
         email: [{ required: true, message: '请输入用户邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入用户手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
      },
      // 控制分配角色的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息对象
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUsersList()
  },
  methods: {
    // 获取用户列表的函数
   async getUsersList () {
    const { data: res } = await this.$http.get('users', { params: this.queryInfo })
    if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userlist = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听pagesize的改变事件
    handleSizeChange (newSize) {
            // console.log(newSize)
            this.queryInfo.pagesize = newSize
             this.getUsersList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
            // console.log(newPage)
             this.queryInfo.pagenum = newPage
             this.getUsersList()
    },
    // 监听 Switch 开关的状态
   async usersStateChanged (userinfo) {
      // console.log(userinfo)
    const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
      return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听添加用户关闭的对话框
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击添加新用户
    addUser () {
       this.$refs.addFormRef.validate(async valid => {
        //  console.log(valid)
        if (!valid) return
        // 发起请求添加新用户
      const { data: res } = await this.$http.post('users', this.addForm)
      if (res.meta.status !== 201) {
        return this.$message.error('添加用户失败！')
      }
      this.$message.success('添加用户成功')
      // 隐藏添加用户的对话框
      this.addDialogVisible = false
      // 重新获取用户列表数据
      this.getUsersList()
       })
    },
    // 展示修改用户的对话框
   async showEditDialog (id) {
    //  console.log(id)
  const { data: res } = await this.$http.get('users/' + id)
  if (res.meta.status !== 200) return this.$message.error('查询用户信息失败')
  this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
          // console.log(valid)
          if (!valid) return
          // console.log(this.editForm)
          // 发起修改用户的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败！')
        // 关闭对话框
        this.editDialogVisible = false
        // 重新获取用户列表
        this.getUsersList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
          })
    },
    // 根据id删除用户
   async removeUsersById (id) {
      // console.log(id)
      // 弹框询问是否删除用户
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {
          return err
        })
        // console.log(confirmResult)
        if (confirmResult !== 'confirm') return this.$message.info('已取消删除！')
        // 发起请求删除用户
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
      // 重新加载用户数据
      this.getUsersList()
      // 提示删除成功的消息
      this.$message.success('删除用户成功！')
    },
    // 展示分配角色的对话框
   async setRole (userInfo) {
      this.userInfo = userInfo
      // 展示对话框之前，获取所有的角色列表数据
    const { data: res } = await this.$http.get('roles')
    if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
    this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
   async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')
const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
    if (res.meta.status !== 200) return this.$message.error('分配角色失败！')
    this.$message.success('分配角色成功！')
    // 刷新列表
    this.getUsersList()
    // 隐藏对话框
    this.setRoleDialogVisible = false
    },
    // 监听对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }

}
</script>
<style lang="less" scoped>
</style>
